peristaltic pump and inductively coupled plasma mass spectrometer

Abstract

The utility model discloses a peristaltic pump and inductively coupled plasma mass spectrometer, peristaltic pump includes: first clamping piece with movable upper top piece, and the first electrically conductive part is on the upper top piece, the rotary part is arranged in the first clamping piece below interval, the pressing part is located above the upper top piece, and the pressing part includes movable pressure block, and the second electrically conductive part that contacts switch is formed with the first electrically conductive part on the one end of pressure block, and the one end of pressure block with second electrically conductive part is used to fix the upper top piece, so that the pump pipe is clamped between the first clamping piece and rotary part under the working condition of peristaltic pump, and make second electrically conductive part with first electrically conductive part contact, contact switch and the control circuit of indicating part, indicating part is used to indicate the contact state of second electrically conductive part with first electrically conductive part, the utility model embodiment can reduce the probability that inductively coupled plasma mass spectrometer is damaged because the pump pipe is not clamped between rotary part and upper top piece and runs peristaltic pump under the working condition of peristaltic pump.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor manufacturing, and in particular to a peristaltic pump and an inductively coupled plasma mass spectrometer. Background Technology

[0002] Inductively coupled plasma (ICP) is the primary light source for atomic emission spectroscopy and mass spectrometry. Typically, multiple detection units (e.g., one detection unit for each element) can be installed around the ICP, forming a multi-element analysis system. Using ICP as the excitation source offers advantages such as low detection limits, wide linear range, minimal ionization and chemical interference, and high accuracy and precision.

[0003] Inductively coupled plasma (ICP-POPs) analysis can detect most elements in the periodic table at levels ranging from milligrams to nanograms per liter and can be used for trace element analysis. It is applied in various industries, including but not limited to environmental monitoring, geochemical analysis, metallurgy, pharmaceutical analysis, and clinical research.

[0004] However, the reliability of the peristaltic pump in current inductively coupled plasma mass spectrometers still needs to be improved. Utility Model Content

[0005] The problem solved by this utility model embodiment is to provide a peristaltic pump and an inductively coupled plasma mass spectrometer to improve the reliability of the peristaltic pump and the service life of the inductively coupled plasma mass spectrometer.

[0006] To address the aforementioned problems, this utility model provides a peristaltic pump, comprising: a first clamping member, the first clamping member including a movable upper block, the upper block having a first conductive portion; a rotating member, spaced below the first clamping member, wherein in the operating state of the peristaltic pump, the first clamping member is fixed, and the rotating member rotates relative to the first clamping member; a pressing member, located above the upper block, the pressing member including a movable pressing block, one end of the pressing block having a second conductive portion forming a contact switch with the first conductive portion, the end of the pressing block having the second conductive portion being used to fix the upper block, thereby clamping the pump tube between the first clamping member and the rotating member in the operating state of the peristaltic pump, and causing the second conductive portion to contact the first conductive portion; and a control circuit, the control circuit including the contact switch and an indicating component electrically connected to the contact switch, the indicating component being used to indicate the contact state between the second conductive portion and the first conductive portion.

[0007] Optionally, the first clamping member further includes a first fixed shaft, and the upper top block is rotatable about the first fixed shaft.

[0008] Optionally, the top of the upper block is provided with a groove, and a first conductive part is provided in the groove; the clamping member further includes a second fixed shaft, the pressing block is rotatable around the second fixed shaft, and one end of the pressing block having the second conductive part is used to rotate and clamp in the groove to fix the upper block.

[0009] Optionally, a first conductive portion is provided at the bottom of the groove; the second conductive portion covers one end of the pressure block.

[0010] Optionally, the groove is elongated and its depth gradually increases along the direction from the first end to the second end; the first conductive part is located in the groove on the side closer to the second end.

[0011] Optionally, the first conductive part is a metal sheet; the second conductive part is a metal block.

[0012] Optionally, the pressing block includes a pressing block body and a rod connected to one end of the pressing block body. The cross-sectional area of ​​the rod is smaller than the cross-sectional area of ​​the pressing block body, and a second conductive part is provided on the end of the rod facing away from the pressing block body.

[0013] Optionally, the pressure block body and the rod are detachably connected.

[0014] Optionally, the area of ​​the first conductive portion is 1.5 cm². 2 up to 3cm 2 .

[0015] Optionally, the area of ​​the second conductive portion is 0.01 cm². 2 Up to 0.04cm 2 .

[0016] Optionally, the indicating component may include a light-emitting diode, an indicator light, or a buzzer.

[0017] Optionally, the indicating component includes a first indicating component; the first indicating component is connected in series with the contact switch to form a first control branch; or, the control circuit further includes a relay; the indicating component includes a first indicating component and a second indicating component; the first indicating component, the coil of the relay, and the contact switch are connected in series to form a first control branch, the second indicating component is connected in series with the normally closed contact of the relay to form a second control branch, and the second control branch is connected in parallel with the first control branch.

[0018] Optionally, there are multiple upper top blocks, which are stacked along a first direction, and each upper top block is provided with a first conductive part; there are multiple pressure blocks, which are also stacked along the first direction, and each pressure block is provided with a second conductive part at one end, and the second conductive part corresponds one-to-one with the first conductive part; multiple contact switches composed of the first conductive part and the second conductive part are connected end to end in sequence and connected in series in the first control branch.

[0019] Optionally, one of the first conductive part and the second conductive part is connected to the power supply through the first indicating component, and the other of the first conductive part and the second conductive part is directly connected to the ground terminal; the control circuit further includes a signal line, one end of which is connected to the power supply of the first conductive part and the second conductive part, and the other end is connected to the input terminal of an external controller.

[0020] Optionally, the control circuit further includes a capacitor, one end of which is connected to a ground terminal, and the other end of which is connected to the signal line.

[0021] Optionally, if the indicating component includes only the first indicating component, a first resistor is also connected in series in the first control branch; or, if the indicating component includes both the first and second indicating components, a first resistor is also connected in series in the first control branch, and a second resistor is also connected in series in the second control branch.

[0022] Optionally, the first control branch is further provided with a connector, the first end of which is directly connected to the ground terminal and one of the first conductive part and the second conductive part, and the second end of which is connected to the power supply through the first indicator and the first resistor, and to the other of the first conductive part and the second conductive part.

[0023] Optionally, the control circuit further includes a signal line, one end of which is connected to the second end of the connector, and the other end is connected to the input terminal of an external controller.

[0024] Accordingly, this utility model embodiment also provides an inductively coupled plasma mass spectrometer, including: the peristaltic pump described in any embodiment of this utility model.

[0025] Optionally, the indicating component includes a first indicating component; the first indicating component is connected in series with the contact switch to form a first control branch; or, the control circuit further includes a relay; the indicating component includes a first indicating component and a second indicating component; the first indicating component, the coil of the relay, and the contact switch are connected in series to form a first control branch, the second indicating component and the normally closed contact of the relay are connected in series to form a second control branch, and the second control branch is connected in parallel with the first control branch; one of the first conductive part and the second conductive part is connected to a power supply through the first indicating component, and the other of the first conductive part and the second conductive part is directly connected to a ground terminal; the inductively coupled plasma mass spectrometer further includes a controller; the control circuit further includes a signal line, one end of which is connected to the power supply of the first conductive part and the second conductive part, and the other end is connected to the input terminal of the controller of the inductively coupled plasma mass spectrometer.

[0026] Compared with the prior art, the technical solution of this utility model embodiment has the following advantages: In the peristaltic pump provided in this embodiment of the utility model, a first conductive part is provided on the upper top block of the first clamping member, and a second conductive part is provided on one end of the pressing block of the clamping member, which forms a contact switch with the first conductive part. The end of the pressing block with the second conductive part is used to fix the upper top block, so that when the peristaltic pump is in operation, the pump tube is clamped between the first clamping member and the rotating member, and the second conductive part is in contact with the first conductive part. The control circuit includes a contact switch and an indicator component electrically connected to the contact switch. The indicator component is used to indicate the contact status between the second conductive part and the first conductive part. Because the upper block is provided with a first conductive part, and the pressure block is provided with a second conductive part at one end for fixing the upper block, the first conductive part and the second conductive part are in contact when the upper block is fixed by the pressure block. Since the indicator is used to indicate the contact status between the second conductive part and the first conductive part, it is possible to know whether the upper block is fixed according to the indication information of the indicator. This reduces the probability of starting the peristaltic pump without clamping the pump tube, and also reduces the probability that the pump tube will be dislodged from the clamp due to the upper block loosening while the peristaltic pump is in operation without being detected. This further helps to reduce the probability of damage to the inductively coupled plasma mass spectrometer caused by the pump tube not being clamped between the rotating part and the upper block while the peristaltic pump is in operation. Correspondingly, it also helps to improve the reliability of the peristaltic pump and the service life of equipment containing the peristaltic pump.

[0027] In an optional configuration, one of the first conductive part and the second conductive part is connected to a power supply, and the other of the first conductive part and the second conductive part is connected to a ground terminal. The control circuit further includes a signal line, one end of which is connected to the power supply of the first conductive part and the second conductive part, and the other end of which is connected to the input terminal of an external controller. This ensures that when the first conductive part and the second conductive part are in contact, the signal line is electrically connected to the ground terminal, thereby enabling the input of a low-level signal to the external controller via the signal line. Furthermore, the signal input to the external controller can be controlled by the contact state of the first conductive part and the second conductive part, i.e., when the upper block is fixed. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an inductively coupled plasma mass spectrometer. Figure 2 This is a schematic diagram of the structure of an embodiment of the peristaltic pump of this utility model; Figure 3 This is a schematic diagram of the peristaltic pump of this utility model in another direction; Figure 4 This is a schematic diagram of the groove and the first conductive part of an embodiment of the peristaltic pump of this utility model; Figure 5 This is a schematic diagram of the pressure block and the second conductive part of an embodiment of the peristaltic pump of this utility model; Figure 6 This is a circuit diagram of the control circuit of an embodiment of the peristaltic pump of this utility model; Figure 7 This is a schematic diagram of the internal workings of the controller in an embodiment of the inductively coupled plasma mass spectrometer of this utility model. Detailed Implementation

[0029] In inductively coupled plasma mass spectrometry (ICP-MS) applications, before exciting atoms and ions and inducing light emission, the sample is typically introduced into the ICP-MS using a peristaltic pump. However, during the process of introducing the sample into the ICP-MS using a peristaltic pump, problems often arise such as forgetting to secure the pump tubing or the pump tubing detaching from the pump due to the high-speed rotation of the peristaltic pump. Figure 1 As shown, these problems can easily cause sample 1 to fail to be discharged from waste liquid outlet 2 in a timely manner, and the sample accumulated in the quartz rectangular tube 3 will also move towards the plasma torch 4, which will cause the coil in the quartz rectangular tube 3 to short-circuit. The short circuit will cause the temperature of the quartz rectangular tube 3 to increase significantly, which will cause the quartz torch tube 3 to melt due to high temperature. Correspondingly, it is also easy for other components of the inductively coupled plasma mass spectrometer to be burned out due to high temperature.

[0030] To address the aforementioned technical problems, this utility model provides a peristaltic pump, comprising: a first clamping member, the first clamping member including a movable upper block, the upper block having a first conductive portion; a rotating member, spaced below the first clamping member, wherein in the operating state of the peristaltic pump, the first clamping member is fixed, and the rotating member rotates relative to the first clamping member; a pressing member, located above the upper block, the pressing member including a movable pressing block, one end of the pressing block having a second conductive portion forming a contact switch with the first conductive portion, the end of the pressing block having the second conductive portion being used to fix the upper block, thereby clamping the pump tube between the first clamping member and the rotating member in the operating state of the peristaltic pump, and causing the second conductive portion to contact the first conductive portion; and a control circuit, the control circuit including the contact switch and an indicating component electrically connected to the contact switch, the indicating component being used to indicate the contact state between the second conductive portion and the first conductive portion.

[0031] In the solution disclosed in this utility model embodiment, a first conductive part is provided on the upper top block of the first clamping member, and a second conductive part is provided on one end of the pressing block of the clamping member, which forms a contact switch with the first conductive part. The end of the pressing block with the second conductive part is used to fix the upper top block, so that when the peristaltic pump is in operation, the pump tube is clamped between the first clamping member and the rotating member, and the second conductive part is in contact with the first conductive part. The control circuit includes a contact switch and an indicator component electrically connected to the contact switch. The indicator component is used to indicate the contact status between the second conductive part and the first conductive part. Because the upper block is provided with a first conductive part, and the pressure block is provided with a second conductive part at one end for fixing the upper block, the first conductive part and the second conductive part are in contact when the upper block is fixed by the pressure block. Since the indicator is used to indicate the contact status between the second conductive part and the first conductive part, it is possible to know whether the upper block is fixed according to the indication information of the indicator. This reduces the probability of starting the peristaltic pump without clamping the pump tube, and also reduces the probability that the pump tube will be dislodged from the clamp due to the upper block loosening while the peristaltic pump is in operation without being detected. This further helps to reduce the probability of damage to the inductively coupled plasma mass spectrometer caused by the pump tube not being clamped between the rotating part and the upper block while the peristaltic pump is in operation. Correspondingly, it also helps to improve the reliability of the peristaltic pump and the service life of equipment containing the peristaltic pump.

[0032] To make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Figure 2 This is a structural schematic diagram of an embodiment of the peristaltic pump of this utility model. Figure 3This is a schematic diagram of one embodiment of the peristaltic pump of this utility model in another direction. Figure 4 This is a schematic diagram of the groove and the first conductive part of an embodiment of the peristaltic pump of this utility model. Figure 5 This is a schematic diagram of the pressure block and the second conductive part according to an embodiment of the peristaltic pump of this utility model. Figure 6 This is a circuit diagram of the control circuit of an embodiment of the peristaltic pump of this utility model. Figure 7 This is a schematic diagram of the internal workings of the controller in an embodiment of the inductively coupled plasma mass spectrometer of this utility model.

[0034] refer to Figures 2 to 7 In this embodiment, the peristaltic pump 100 includes: a first clamping member 110, which includes a movable upper block 111, and a first conductive part 151 is provided on the upper block 111; a rotating member 120, which is spaced below the first clamping member 110. In the working state of the peristaltic pump 100, the first clamping member 110 is fixed, and the rotating member 120 rotates relative to the first clamping member 110; and a pressing member 130, which is located above the upper block 111, and includes a movable pressing block 131, one end of which is provided to contact the first conductive part 151. The second conductive part 152 of the switch 155, one end of the pressure block 131 having the second conductive part 152 is used to fix the upper top block 111, so that the pump tube 200 is clamped between the first clamping member 110 and the rotating member 120 in the working state of the peristaltic pump 100, and the second conductive part 152 is in contact with the first conductive part 151; the control circuit 150 includes the contact switch 155 and the indicator member 156 electrically connected to the contact switch 155, the indicator member 156 is used to indicate the contact state of the second conductive part 152 and the first conductive part 151.

[0035] Specifically, the phrase "so that the pump tube 200 is clamped between the first clamping member 110 and the rotating member 120 in the working state of the peristaltic pump 100" means that in the working state of the peristaltic pump 100, the clamping degree of the pump tube 200 between the first clamping member 110 and the rotating member 120 is such that the pump tube 200, as the rotating member 120 rotates, transports the sample in the pump tube 200 forward (e.g., towards the nebulizer).

[0036] In some embodiments, the peristaltic pump 100 includes a base 160. The first clamping member 110, the rotating member 120, and the pressing member 130 are all mounted on the base 160; in the operating state of the peristaltic pump 100, the upper top block 111 is fixed on the base 160; the rotating member 120 rotates on the base 160.

[0037] The first clamping member 110 is used to clamp the pump tube 200 with the rotating member 120 when the peristaltic pump 100 is in operation.

[0038] The upper block 111 is movable, which facilitates the installation of the pump tube before testing the sample and the timely removal of the pump tube 200 after testing the sample for necessary cleaning.

[0039] It is understood that the peristaltic pump 100 is in a non-operating state before and after the sample is tested.

[0040] As an example, the upper block 111 is made of a rigid material to provide a stable clamping force on the pump tube 200.

[0041] In some embodiments, the first clamping member 110 further includes a first fixed shaft 112, and the upper top block 111 is rotatable about the first fixed shaft 112 to facilitate clamping the pump tube when the peristaltic pump 100 is in operation, and to facilitate releasing the pump tube when the peristaltic pump 100 is not in operation. In other embodiments, the upper top block can be made movable in other ways, for example, the upper top block can be detachably mounted on the base.

[0042] Specifically, the top of the upper block 111 is provided with a groove 113, and a first conductive part 151 (e.g., ...) is provided in the groove 113. Figure 4 (As shown).

[0043] The top of the upper top block 111 is provided with a groove 113, which helps to reduce the difficulty of the pressure block 131 fixing the upper top block 111. Moreover, the structure of the groove 113 is simple, which helps to reduce the manufacturing difficulty of forming the upper top block 111. In other embodiments, a fastener may also be provided on the upper top block.

[0044] More specifically, a first conductive part 151 is provided at the bottom of the groove 113, which helps to reduce the difficulty of setting the first conductive part 151. Moreover, it also helps to avoid the situation where the second conductive part 152 and the first conductive part 151 are in contact but the upper top block 111 is not fixed due to the excessive contact area between the second conductive part 152 and the first conductive part 151. This makes it more accurate to know whether the upper top block 111 is fixed according to the indication information of the indicator 156.

[0045] As an example, the first conductive part 151 is a metal sheet, which helps to reduce the depth of the groove 113, thereby reducing the difficulty of forming the groove 113. Moreover, the fact that the first conductive part 151 is a metal sheet also makes it easier to attach the first conductive part 151 to the bottom of the groove 113 in a simpler way (e.g., by bonding).

[0046] As another example, the groove 113 is elongated and its depth gradually increases along the direction from the first end 1131 to the second end 1132, that is, along the length of the groove 113. The first conductive part 151 is located in the groove 113 near the second end 1132, that is, the first conductive part 151 is located at the bottom of the deeper side of the groove 113. Correspondingly, when the peristaltic pump 100 is working, the second conductive part 152 is located in the deeper side of the groove 113, that is, one end of the pressure block 131 is locked in the deeper side of the groove 113, thereby making the pressure block 131 more secure in fixing the upper block 111.

[0047] It should be noted that the area of ​​the first conductive part 151 should not be too small or too large. If the area of ​​the first conductive part 151 is too small, the contact area between the first conductive part 151 and the second conductive part 152 may be too small when the peristaltic pump 100 is in operation, which may lead to poor accuracy in determining whether the upper block 111 is fixed based on the indication information from the indicating component 156. If the area of ​​the first conductive part 151 is too large, it may lead to a situation where the second conductive part 152 is in contact with the first conductive part 151, but the upper block 111 is not fixed, which may also lead to poor accuracy in determining whether the upper block 111 is fixed based on the indication information from the indicating component 156. Therefore, in some embodiments, the area of ​​the first conductive part is in the range of 1.5 cm². 2 up to 3cm 2 .

[0048] In some embodiments, the peristaltic pump 100 further includes: a second clamping member 140 located below the rotating member 120; the second clamping member 140 includes a lower top block 141 located below the rotating member 120, and the upper top block 111 and the lower top block 141 are disposed opposite to each other and surround the rotating member 120.

[0049] The second clamping member 140, together with the first clamping member 110, cooperates with the rotating member 120 to clamp the pump tube 200 when the peristaltic pump 100 is in operation. Specifically, the lower top block 141, the upper top block 111, and the rotating member 120 cooperate with each other to clamp the pump tube 200.

[0050] As an example, the lower top block 141 is made of a rigid material to provide a stable clamping force on the pump tube 200.

[0051] The rotating member 120 is used to rotate relative to the first clamping member 110 and the second clamping member 140 in the working state of the peristaltic pump 100, so that the sample in the pump tube 200 moves forward as the rotating member 120 rotates under the action of the clamping force.

[0052] In some embodiments, the peristaltic pump 100 further includes a drive shaft (not shown) and a motor (not shown), and the rotating component 120 is driven to the motor via the drive shaft.

[0053] The clamping member 130 is used to fix the first clamping member 110 when the peristaltic pump 100 is in operation. Specifically, the pressure block 131 of the clamping member 130 is used to fix the upper top block 111 when the peristaltic pump 100 is in operation. That is, the first clamping member 110 is fixed by fixing the upper top block 111 with the pressure block 131.

[0054] In some embodiments, the clamping member 130 further includes a second fixed shaft 132, and the pressing block 131 is rotatable about the second fixed shaft 132. One end of the pressing block 131 having the second conductive part 152 is used to rotate and clamp in the groove 113 to fix the upper top block 111.

[0055] The clamping member 130 also includes a second fixed shaft 132, and the pressure block 131 can rotate around the second fixed shaft 132, which helps to reduce the difficulty of setting up the movable pressure block 131.

[0056] Furthermore, when a groove 113 is provided on the top of the upper top block 111 and a first conductive part 151 is provided in the groove 113, the pressure block 131 can rotate around the second fixed axis 132, which also facilitates the rotation of the pressure block 131 and its locking in the groove 113, thereby facilitating the fixation of the upper top block 111 by the pressure block 131.

[0057] In other embodiments, a fastener may also be provided on the upper top block. Correspondingly, a fastener is provided on the pressure block. In still other embodiments, a fastener may be provided on the upper top block; and a fastener may be provided on the pressure block.

[0058] Specifically, such as Figure 5As shown, when a first conductive part 151 is provided at the bottom of the groove 113, the second conductive part 152 covers one end of the pressure block 131, which helps to ensure that there is a suitable contact area between the second conductive part 152 and the first conductive part 151 when the peristaltic pump 100 is in operation, thereby ensuring better accuracy in knowing whether the upper block 111 is fixed according to the indication information of the indicator component 156.

[0059] As an example, the second conductive part 152 is a metal block, so that even if the second conductive part 152 of a certain thickness is worn, a portion of the second conductive part 152 can still contact the first conductive part 151, thereby reducing the frequency of replacing the second conductive part 152 or the pressure block 131, and thus improving production efficiency.

[0060] It should be noted that the second conductive part 152 can be glued to one end of the pressure block 131, or the second conductive part 152 can be embedded into one end of the pressure block 131 by heat fusion. In other embodiments, other suitable methods can also be used to fix the second conductive part to one end of the pressure block.

[0061] It should also be noted that the area of ​​the second conductive part 152 should not be too small or too large. If the area of ​​the second conductive part 152 is too small, the contact area between the first conductive part 151 and the second conductive part 152 may be too small when the peristaltic pump 100 is in operation, which may lead to poor accuracy in determining whether the upper block 111 is fixed based on the indication information from the indicating component 156. If the area of ​​the second conductive part 152 is too large, it may lead to a situation where the second conductive part 152 is in contact with the first conductive part 151, but the upper block 111 is not fixed, which may also lead to poor accuracy in determining whether the upper block 111 is fixed based on the indication information from the indicating component 156. Therefore, in some embodiments, the area of ​​the second conductive part is in the range of 0.01 cm². 2 Up to 0.04cm 2 .

[0062] In some embodiments, the pressure block 131 includes a pressure block body 1311 and a rod portion 1312 connected to one end of the pressure block body 1311. The cross-sectional area of ​​the rod portion 1312 is smaller than the cross-sectional area of ​​the pressure block body 1311, and a second conductive portion 152 is provided on the end of the rod portion 1312 facing away from the pressure block body 1311. This allows the pressure block 131 to be locked in the groove 113 even when the opening size of the groove 113 is small, thereby reducing the difficulty of locking the pressure block 131 in the groove 113.

[0063] It should be noted that the pressure block body 1311 and the rod 1312 are detachably connected, which makes it convenient to replace only the rod 1312 when the second conductive part 152 is severely worn, thereby reducing the maintenance cost of the peristaltic pump 100 and thus reducing the process cost.

[0064] It should also be noted that the pressure block body 1311 and the rod portion 1312 are threaded together. In other embodiments, the pressure block body and the rod portion may also be connected by other detachable methods, such as snap-fit ​​connections.

[0065] Specifically, the pressure block 131 further includes a clamping force adjusting component 1313, located at the other end of the pressure block body 1311. The clamping force adjusting component 1313 can adjust the clamping force on the pump pipe 200 according to actual conditions (e.g., the material and size of the pump pipe 200, the required pumping volume, etc.).

[0066] In some embodiments, there are multiple upper top blocks 111, which are stacked along a first direction, and each upper top block 111 is provided with a first conductive part 151; there are multiple pressing blocks 131, which are also stacked along the first direction, and each pressing block 131 is provided with a second conductive part 152 at one end, and the second conductive part 152 corresponds one-to-one with the first conductive part 151, that is, the upper top block 111 and the pressing block 131 also correspond one-to-one.

[0067] The first direction is perpendicular to the surface of the base 160, which is also the axial direction of the first fixed shaft 112.

[0068] The number of the top block 111 and the pressure block 131 are both multiple and correspond one-to-one, so that the peristaltic pump 100 has multiple sample flow channels, thereby enabling the equipment containing the peristaltic pump 100 to meet higher requirements, such as enabling the inductively coupled plasma mass spectrometer to perform simultaneous multi-element detection.

[0069] It should be noted that when there are multiple upper top blocks 111, there are also multiple lower top blocks 141. The multiple lower top blocks 141 are stacked along the first direction, and the upper top blocks 111 and the lower top blocks 141 correspond one-to-one.

[0070] Because the upper top block 111 is provided with a first conductive part 151, and the pressure block 131 is used to fix the upper top block 111, one end of which is provided with a second conductive part 152, the first conductive part 151 and the second conductive part 152 are in contact when the upper top block 111 is fixed by the pressure block. Furthermore, because the indicating component 156 is used to indicate the contact status between the second conductive part 152 and the first conductive part 151, it is possible to know whether the upper top block 111 is fixed based on the indication information from the indicating component 156, thereby reducing the risk of failure to clamp. The probability of the pump tube 200 starting the peristaltic pump 100 is reduced, as is the probability that the pump tube 200 may fall out of the clamp due to the loosening of the upper top block 111 while the peristaltic pump 100 is in operation without being detected. This helps to reduce the probability of damage to the inductively coupled plasma mass spectrometer caused by the pump tube 200 not being clamped between the rotating part 120 and the upper top block 111 while the peristaltic pump 100 is in operation. Correspondingly, this also helps to improve the reliability of the peristaltic pump 100 and the service life of the equipment containing the peristaltic pump 100.

[0071] Understandably, under the indication of the indicator component 156, it is possible to promptly detect that the upper block 111 is not fixed, and then start the peristaltic pump 100 after re-fixing the upper block 111, or stop the operation of the peristaltic pump 100.

[0072] In some embodiments, the indicator 156 includes a light-emitting diode (LED), which helps reduce the power consumption of the control circuit 150 and also helps improve the service life of the indicator 156. In other embodiments, the indicator also includes an indicator light. In still other embodiments, the indicator 156 may also include a suitable indicator such as a buzzer.

[0073] In some embodiments, the indicating component 156 includes a first indicating component 1561; the first indicating component 1561 is connected in series with the contact switch 155 to form a first control branch 1501.

[0074] In other words, when the first conductive part 151 is in contact with the second conductive part 152, the contact switch 155 is closed, the first control branch 1501 is turned on, and the first indicator component 1561 sends an indication message that means "the first conductive part 151 is in contact with the second conductive part 152", so that the operator can start the peristaltic pump 100 and related equipment (e.g., inductively coupled plasma mass spectrometer) after receiving the indication signal.

[0075] Specifically, the first indicator component 1561 is a green indicator component, such as a green light-emitting diode or a green indicator light.

[0076] In other embodiments, the control circuit further includes a relay; the indicating component includes a first indicating component and a second indicating component; the first indicating component, the coil of the relay, and the contact switch are connected in series to form a first control branch, the second indicating component and the normally closed contact of the relay are connected in series to form a second control branch, and the second control branch is connected in parallel with the first control branch.

[0077] In other words, when the first conductive part and the second conductive part are in contact, the contact switch is closed, the first control branch is connected, and the first indicating component can issue an indication message indicating that "the first conductive part is in contact with the second conductive part"; and the normally closed contact of the second control branch is opened because the relay coil is energized, so the second indicating component cannot issue an indication message. When the first conductive part and the second conductive part are not in contact, the contact switch is open, the first control branch is not connected, the first indicating component cannot issue an indication message, and correspondingly, the relay coil is de-energized; the normally closed contact of the second control branch is closed, the second control branch is connected, and the second indicating component can issue an indication message indicating that "the first conductive part and the second conductive part are not in contact".

[0078] The second indicator is a red indicator, such as a red LED or a red indicator light.

[0079] In some embodiments, a plurality of contact switches 155, which are composed of the first conductive part 151 and the second conductive part 152, are connected end to end in sequence and connected in series in the first control branch 1501.

[0080] In other words, the first control branch 1501 can only be turned on when all the upper blocks 111 are fixed, so that the first indicator component 1561 can issue corresponding indication information. This helps to avoid the situation where the first indicator component 1561 still issues corresponding indication information when the detection pump tube is not fixed or when only part of the detection pump tube is not fixed due to the mistaken fixing of other upper blocks 111. This helps to improve the accuracy of the indication information issued by the first indicator component 1561.

[0081] In some embodiments, such as Figure 6As shown, one of the first conductive part 151 and the second conductive part 152 is connected to the power supply through the first indicating component 1561, and the other of the first conductive part 151 and the second conductive part 152 is directly connected to the ground terminal. The control circuit also includes a signal line E10, one end of which is connected to the power supply of the first conductive part 151 and the second conductive part 152, and the other end is connected to the input terminal 302 of the external controller 300. This allows the signal line E10 to be electrically connected to the ground terminal when the first conductive part 151 contacts the second conductive part 152, i.e., when the peristaltic pump 100 is ready (pump ok). This enables a low-level signal to be input to the input terminal 302 of the external controller 300 through the signal line E10, indicating that the peristaltic pump 100 is ready (pump ok). The signal (ok) is a grounding signal, which in turn can control the signal input of the external controller 300 by the contact state of the first conductive part 151 and the second conductive part 152, i.e., the upper top block 111 is fixed. Correspondingly, the operation of the peristaltic pump can be controlled by the external controller when the first conductive part 151 and the second conductive part 152 are in contact. Therefore, it can be ensured that the peristaltic pump 100 will not operate when the first conductive part 151 and the second conductive part 152 are not in contact, thus ensuring the safe operation of the equipment.

[0082] It should be noted that when there are multiple contact switches 155, the first conductive part 151 or the second conductive part 152 of the contact switch 155 located at the first end is connected to the power supply, and the conductive part connected to the power supply is also connected to one end of the signal line E10; the first conductive part 151 or the second conductive part 152 of the contact switch 155 located at the end is connected to the ground terminal.

[0083] As an example, the external controller is an MCU (Microcontroller Unit). In other embodiments, the external controller may also be a processor, controller, microcontroller, microprocessor, or other suitable control unit. Specifically, the external controller 300 may be the controller of an inductively coupled plasma mass spectrometer. The external controller 300 may also be the controller of other devices.

[0084] As another example, the voltage of the power supply is 5V.

[0085] It should be noted that, as Figure 6 and Figure 7As shown, the input terminal 302 of the external controller 300 is also connected to the power supply of the external controller 300 through the internal pull-up resistor R2. When the contact switch 155 is open, the input terminal 302 of the external controller 300 is connected to the power supply of the external controller 300 through the internal pull-up resistor R2, so that the input terminal 302 of the external controller 300 reads a high-level signal. When the contact switch 155 is closed, the input terminal 302 of the external controller 300 is connected to the ground terminal, so that the input terminal 302 of the external controller 300 reads a low-level signal. Thus, the peristaltic pump 100 can be controlled to stop or start by the signal read by the input terminal 302 of the external controller 300.

[0086] As an example, the peristaltic pump 100 is the peristaltic pump of the inductively coupled plasma mass spectrometer, and the external controller 300 is the controller of the inductively coupled plasma mass spectrometer.

[0087] Specifically, the control circuit 150 further includes a capacitor C1, one end of which is connected to a ground terminal and the other end of which is connected to the signal line E10. The capacitor C1 is used to filter out high-frequency interference on the signal line E10.

[0088] Because the upper block 111 is easily subjected to violent bounce when it is fixed by the pressure block 131, resulting in a series of glitch pulses, the capacitor C1 can absorb these bounce signals, thereby making the low-level signal received by the input terminal 302 of the external controller 300 clean and stable, and consequently making it less likely for the external controller 300 to make misjudgments.

[0089] In some embodiments, when the indicator 156 includes only the first indicator 1561, a first resistor R1 is also connected in series in the first control branch 1501.

[0090] The first resistor R1 is used as a current-limiting resistor for the first indicator component 1561, thereby protecting the first indicator component 1561.

[0091] In other embodiments, when the indicating component includes a first indicating component and a second indicating component, a first resistor is further connected in series in the first control branch; and a second resistor is further connected in series in the second control branch. The second resistor serves as a current-limiting resistor for the second indicating component, thereby protecting the second indicating component.

[0092] Specifically, the first control branch 1501 is also provided with a connector P1. The first end 1-1 of the connector P1 is directly connected to the ground terminal and one of the first conductive part 151 and the second conductive part 152. The second end 1-2 of the connector P1 is connected to the power supply through the first indicator component 1561 and the first resistor R1, and is connected to the other of the first conductive part 151 and the second conductive part 152.

[0093] The connector P1 is easy to disassemble and replace, so that when the contact switch 155 needs to be replaced, the contact switch 155 can be separated from the connector P1 without affecting the part of the first control branch 1501 connected to the power supply or the part of the first control branch 1501 connected to the ground terminal, thereby improving the maintenance convenience of the peristaltic pump 100.

[0094] More specifically, the connector P1 is a two-pin connector: for example, a terminal block, etc.

[0095] As an example, the control circuit 150 also includes a signal line E10, one end of which is connected to the second terminal 1-2 of the connector P1, and the other end is connected to the input terminal 302 of the external controller 300.

[0096] The connector P1 also facilitates the replacement of signal line E10.

[0097] It is understood that when there are multiple contact switches 155, the conductive part connected to the power supply is connected to the second end 1-2 of the connector P1, and the conductive part connected to the grounding end is connected to the first end 1-1 of the connector P1.

[0098] Specifically, the first resistor R1 and the first indicator 1561 are connected in series between the second terminal 1-2 and the power supply.

[0099] Accordingly, this utility model also provides an inductively coupled plasma mass spectrometer.

[0100] Reference Figures 2 to 7 The inductively coupled plasma mass spectrometer includes: the peristaltic pump 100 described in any embodiment of this utility model.

[0101] Because the upper top block 111 is provided with a first conductive part 151, and the pressure block 131 is used to fix the upper top block 111, one end of which is provided with a second conductive part 152, the first conductive part 151 and the second conductive part 152 are in contact when the upper top block 111 is fixed by the pressure block. Furthermore, because the indicating component 156 is used to indicate the contact status between the second conductive part 152 and the first conductive part 151, it is possible to know whether the upper top block 111 is fixed based on the indication information from the indicating component 156, thereby reducing the risk of failure to clamp. The probability of the pump tube 200 starting the peristaltic pump 100 is reduced, as is the probability that the pump tube 200 may fall out of the clamp due to the loosening of the upper top block 111 while the peristaltic pump 100 is in operation without being detected. This helps to reduce the probability of damage to the inductively coupled plasma mass spectrometer caused by the pump tube 200 not being clamped between the rotating part 120 and the upper top block 111 while the peristaltic pump 100 is in operation. Correspondingly, this also helps to improve the reliability of the peristaltic pump 100 and the service life of the equipment containing the peristaltic pump 100.

[0102] Since the indicating component 156 includes a first indicating component 1561; the first indicating component 1561 is connected in series with the contact switch 155 to form a first control branch 1501 (e.g. Figure 6 (as shown); or, the control circuit further includes a relay; the indicating component includes a first indicating component and a second indicating component; the first indicating component, the coil of the relay, and the contact switch are connected in series to form a first control branch, the second indicating component and the normally closed contact of the relay are connected in series to form a second control branch, and the second control branch is connected in parallel with the first control branch. In some embodiments, one of the first conductive part 151 and the second conductive part 152 is connected to a power supply through the first indicating component 1561, and the other of the first conductive part 151 and the second conductive part 152 is directly connected to a ground terminal; the inductively coupled plasma mass spectrometer further includes a controller 300; the control circuit 150 further includes a signal line E10, one end of the signal line E10 is connected to one of the first conductive part 151 and the second conductive part 152 connected to a power supply, and the other end is connected to the input terminal 302 of the controller (i.e., external controller) 300 of the inductively coupled plasma mass spectrometer.

[0103] When the first conductive part 151 and the second conductive part 152 come into contact, i.e., when the peristaltic pump 100 is ready (pump ok), the signal line E10 is electrically connected to the ground terminal. This allows a low-level signal, indicating that the peristaltic pump 100 is ready (pump ok), to be input to the controller of the inductively coupled plasma mass spectrometer via the signal line E10. Consequently, the contact state between the first conductive part 151 and the second conductive part 152, i.e., when the upper block 11 is fixed, allows control of the signal input to the controller 300 of the inductively coupled plasma mass spectrometer. Correspondingly, when the first conductive part 151 and the second conductive part 152 are in contact, the controller 300 of the inductively coupled plasma mass spectrometer can control the operation of the peristaltic pump 100. Therefore, it can be ensured that the peristaltic pump will not operate when the first conductive part 151 and the second conductive part 152 are not in contact, ensuring safe operation of the equipment.

[0104] It should be noted that, as Figure 6 and Figure 7 As shown, the input terminal 302 of the controller of the inductively coupled plasma mass spectrometer is also connected to the power supply of the controller 300 through the internal pull-up resistor R2. This allows the input terminal 302 to read a high-level signal when the contact switch 155 is open, and to connect to the power supply of the controller 300 through its internal pull-up resistor R2. When the contact switch 155 is closed, the input terminal 302 is connected to the ground terminal, allowing the input terminal 302 to read a low-level signal. Therefore, the peristaltic pump 100 can be controlled to stop or start based on the signal read from the input terminal 302 of the controller. As an example, the power supply voltage of the controller 300 of the inductively coupled plasma mass spectrometer is 5V.

[0105] It should also be noted that the control circuit further includes a capacitor C1, one end of which is connected to the ground terminal, and the other end of which is connected to the signal line E10. The capacitor C1 is used to filter out high-frequency interference on the signal line E10.

[0106] Because a violent bounce is easily generated when the upper block 111 is fixed by the pressure block 131, resulting in a series of spike pulses, the capacitor C1 can absorb these bounce signals, thereby making the low-level signal received by the input terminal 302 of the controller 300 of the inductively coupled plasma mass spectrometer clean and stable, and correspondingly making the controller 300 of the inductively coupled plasma mass spectrometer less prone to misjudgment.

[0107] As an example, the operating steps of the peristaltic pump 100 in an inductively coupled plasma mass spectrometer include: turning on the inductively coupled plasma mass spectrometer; fixing the upper block 111 of the first clamping member 110; confirming whether the upper block 111 of the first clamping member 110 is fixed by using the level signal read from the input terminal 302 by the controller 300 of the inductively coupled plasma mass spectrometer; if so, allowing the inductively coupled plasma mass spectrometer to ignite; otherwise, returning to the step of fixing the upper block 111 of the first clamping member 110.

[0108] For a detailed description of the peristaltic pump 100, please refer to the detailed description of the foregoing embodiments, which will not be repeated in this embodiment.

[0109] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A peristaltic pump, characterized in that, include: A first clamping member, the first clamping member including a movable upper block, the upper block being provided with a first conductive part; A rotating component is spaced below the first clamping component. When the peristaltic pump is in operation, the first clamping component is fixed, and the rotating component rotates relative to the first clamping component. A clamping member is located above the upper top block. The clamping member includes a movable clamping block. One end of the clamping block is provided with a second conductive part that forms a contact switch with the first conductive part. The end of the clamping block with the second conductive part is used to fix the upper top block, so that the pump tube is clamped between the first clamping member and the rotating member in the working state of the peristaltic pump, and the second conductive part is in contact with the first conductive part. The control circuit includes the contact switch and an indicator component electrically connected to the contact switch, the indicator component being used to indicate the contact state between the second conductive part and the first conductive part.

2. The peristaltic pump as described in claim 1, characterized in that, The first clamping member further includes a first fixed shaft, and the upper top block is rotatable about the first fixed shaft.

3. The peristaltic pump as described in claim 2, characterized in that, The top of the upper block is provided with a groove, and a first conductive part is provided in the groove; The clamping member further includes a second fixed shaft, and the pressure block is rotatable around the second fixed shaft. One end of the pressure block having the second conductive part is used to rotate and clamp in the groove to fix the upper top block.

4. The peristaltic pump as described in claim 3, characterized in that, The bottom of the groove is provided with a first conductive part; the second conductive part covers one end of the pressure block.

5. The peristaltic pump as described in claim 4, characterized in that, The groove is elongated and gradually increases in depth from the first end to the second end; the first conductive part is located in the groove on the side closer to the second end.

6. The peristaltic pump as claimed in claim 4, characterized in that, The first conductive part is a metal sheet; the second conductive part is a metal block.

7. The peristaltic pump as described in claim 3, characterized in that, The pressing block includes a pressing block body and a rod connected to one end of the pressing block body. The cross-sectional area of ​​the rod is smaller than the cross-sectional area of ​​the pressing block body, and a second conductive part is provided on the end of the rod facing away from the pressing block body.

8. The peristaltic pump as claimed in claim 7, characterized in that, The pressure block body is detachably connected to the rod.

9. The peristaltic pump as claimed in claim 1, characterized in that, The area of ​​the first conductive part is 1.5 cm². 2 up to 3cm 2 .

10. The peristaltic pump as claimed in claim 1, characterized in that, The area of ​​the second conductive part is 0.01 cm². 2 Up to 0.04cm 2 .

11. The peristaltic pump as claimed in claim 1, characterized in that, The indicating component includes a light-emitting diode, an indicator light, or a buzzer.

12. The peristaltic pump as claimed in claim 1, characterized in that, The indicating component includes a first indicating component; the first indicating component is connected in series with the contact switch to form a first control branch; or, The control circuit further includes a relay; the indicating component includes a first indicating component and a second indicating component; the first indicating component, the coil of the relay, and the contact switch are connected in series to form a first control branch, the second indicating component and the normally closed contact of the relay are connected in series to form a second control branch, and the second control branch is connected in parallel with the first control branch.

13. The peristaltic pump as claimed in claim 12, characterized in that, The number of top blocks is multiple, and the multiple top blocks are stacked along the first direction. Each top block is provided with a first conductive part. The number of pressure blocks is also multiple, and the multiple pressure blocks are also stacked along the first direction. Each pressure block is provided with a second conductive part at one end, and the second conductive part corresponds one-to-one with the first conductive part. The multiple contact switches composed of the first conductive part and the second conductive part are connected end to end in sequence and connected in series in the first control branch.

14. The peristaltic pump as claimed in claim 12, characterized in that, One of the first conductive part and the second conductive part is connected to the power supply through the first indicator component, and the other of the first conductive part and the second conductive part is directly connected to the ground terminal. The control circuit also includes a signal line, one end of which is connected to a power source among the first conductive part and the second conductive part, and the other end is connected to the input terminal of an external controller.

15. The peristaltic pump as claimed in claim 14, characterized in that, The control circuit also includes a capacitor, one end of which is connected to a ground terminal, and the other end of which is connected to the signal line.

16. The peristaltic pump as claimed in claim 12, characterized in that, When the indicating component includes only the first indicating component, a first resistor is also connected in series in the first control branch; or, When the indicating component includes a first indicating component and a second indicating component, a first resistor is also connected in series in the first control branch; and a second resistor is also connected in series in the second control branch.

17. The peristaltic pump as claimed in claim 16, characterized in that, The first control branch is also provided with a connector. The first end of the connector is directly connected to the ground terminal and one of the first conductive part and the second conductive part. The second end of the connector is connected to the power supply through the first indicator component and the first resistor, and is also connected to the other of the first conductive part and the second conductive part.

18. The peristaltic pump as claimed in claim 16, characterized in that, The control circuit also includes a signal line, one end of which is connected to the second end of a connector, and the other end is connected to the input end of an external controller.

19. An inductively coupled plasma mass spectrometer, characterized in that, include: The peristaltic pump as described in any one of claims 1 to 18.

20. The inductively coupled plasma mass spectrometer as described in claim 19, characterized in that, The indicating component includes a first indicating component; the first indicating component is connected in series with the contact switch to form a first control branch; or, the control circuit further includes a relay; the indicating component includes a first indicating component and a second indicating component; the first indicating component, the coil of the relay, and the contact switch are connected in series to form a first control branch, the second indicating component is connected in series with the normally closed contact of the relay to form a second control branch, and the second control branch is connected in parallel with the first control branch; One of the first conductive part and the second conductive part is connected to the power supply through the first indicator component, and the other of the first conductive part and the second conductive part is directly connected to the ground terminal. The inductively coupled plasma mass spectrometer also includes a controller; The control circuit also includes a signal line, one end of which is connected to a power source among the first conductive part and the second conductive part, and the other end is connected to the input terminal of the controller of the inductively coupled plasma mass spectrometer.

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